I played a sub-par game on today's daily and had to rely on a bit of luck to finish the map. I ended up in a position where I had no more refills left, and not being able to take a hit from the boss, but still needing 3 hits on the boss.
I never quit a dungeon until I'm dead though, and as usual, hit the boss to finish the game...and would you believe it, I actually dodged his hit




Moral of the story, never give up until you're dead.